《AS-NZS-4020-2005.pdf》由会员分享，可在线阅读，更多相关《AS-NZS-4020-2005.pdf（85页珍藏版）》请在三一文库上搜索。
1、AS/NZS 4020:2005 Australian/New Zealand Standard Testing of products for use in contact with drinking water AS/NZS 4020:2005 Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 22 Aug 2008 AS/NZS 4020:2005 This Joint Australian/New Zealand Standard was prepared by Joint Technical Committee CH-034, Material
2、s in Contact with Drinking Water. It was approved on behalf of the Council of Standards Australia on 20 October 2005 and on behalf of the Council of Standards New Zealand on 4 November 2005. This Standard was published on 29 November 2005. The following are represented on Committee CH-034: AUSTRAP A
3、ustralian Chamber of Commerce and Industry Australian Electrical and Electronic Manufacturers Association Australian Industry Group Australian Paint Manufacturers Federation Australian Society for Microbiology Incorporated Certification Bodies (Australia) Copper Development Centre of Australia Healt
4、h Department of Western Australia Ministry of Health, New Zealand National Health and Medical Research Council Plastics New Zealand Plastics Industry Pipe Association of Australia Rubber Manufacturers Association of Australasia The Royal Australian Chemical Institute Water Services Association of Au
5、stralia Keeping Standards up-to-date Standards are living documents which reflect progress in science, technology and systems. To maintain their currency, all Standards are periodically reviewed, and new editions are published. Between editions, amendments may be issued. Standards may also be withdr
6、awn. It is important that readers assure themselves they are using a current Standard, which should include any amendments which may have been published since the Standard was purchased. Detailed information about joint Australian/New Zealand Standards can be found by visiting the Standards Web Shop
7、 at .au or Standards New Zealand web site at www.standards.co.nz and looking up the relevant Standard in the on-line catalogue. Alternatively, both organizations publish an annual printed Catalogue with full details of all current Standards. For more frequent listings or notification of revisions, a
8、mendments and withdrawals, Standards Australia and Standards New Zealand offer a number of update options. For information about these services, users should contact their respective national Standards organization. We also welcome suggestions for improvement in our Standards, and especially encoura
9、ge readers to notify us immediately of any apparent inaccuracies or ambiguities. Please address your comments to the Chief Executive of either Standards Australia or Standards New Zealand at the address shown on the back cover. This Standard was issued in draft form for comment as DR 05089. Accessed
10、 by UNIVERSITY OF SOUTH AUSTRALIA on 22 Aug 2008 AS/NZS 4020:2005 Australian/New Zealand Standard Testing of products for use in contact with drinking water Originated as AS 3855(Int)1991. Previous edition AS/NZS 4020:2002. Fifth edition 2005. COPYRIGHT Standards Australia/Standards New Zealand All
11、rights are reserved. No part of this work may be reproduced or copied in any form or by any means, electronic or mechanical, including photocopying, without the written permission of the publisher. Jointly published by Standards Australia, GPO Box 476, Sydney, NSW 2001 and Standards New Zealand, Pri
12、vate Bag 2439, Wellington 6020 ISBN 0 7337 6993 4 Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 22 Aug 2008 AS/NZS 4020:2005 2 PREFACE This Standard was prepared by the Joint Standards Australia/Standards New Zealand Committee CH-034, Materials in Contact with Drinking Water, to supersede AS/NZS 4020
13、:2002, Testing of products for use in contact with drinking water. In preparing this Standard, consideration has been given to comparable overseas Standards, to minimize duplication of effort and to maintain commonality, wherever reasonable, with those Standards. Particular consideration has been gi
14、ven to the various parts of BS 6920, Suitability of non-metallic products for use in contact with water intended for human consumption with regard to their effect on the quality of the water. Several of the test procedures and criteria given in BS 6920 have been adopted or modified for Australian an
15、d New Zealand requirements. This Standard departs from BS 6920 as follows: (a) This Standard provides a method of testing for the leaching of compounds that may produce a mutagenic effect. (b) The requirement for products to be tested at surface area-to-volume ratios that are not less than those in
16、the intended end-use exposure (with the exception of the test for growth of aquatic micro-organisms). Where there is a difference between test and end-use exposures, provision is made for a scaling factor to be applied to the test result. (c) The inclusion of testing for metals extracted from metal
17、products that are often components of products in contact with drinking water. Significant changes from the previous edition include the following: (i) Inclusion of a colorimetric method for determination of cytotoxic activity. (ii) Inclusion of an appendix on the structure of test reports. (iii) Re
18、vision of the appendix on product submission information. (iv) Altered requirements for testing non-metallic products for leaching of metals. The terms normative and informative have been used in this Standard to define the application of the appendices to which they apply. A normative appendix is a
19、n integral part of a Standard, whereas an informative appendix is for information and guidance only. Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 22 Aug 2008 3 AS/NZS 4020:20053 CONTENTS Page FOREWORD4 1 SCOPE5 2 REFERENCED DOCUMENTS5 3 DEFINITIONS6 4 TEST SAMPLES8 5 SCALING FACTORS.9 6 TEST REQUIRE
20、MENTS 11 7 HOT WATER TESTS. 14 APPENDICES A SAMPLE PREPARATION 15 B SCALING FACTORSDERIVATION AND APPLICATION 21 C TEST METHODTASTE OF WATER EXTRACT 26 D TEST METHODAPPEARANCE OF WATER EXTRACT. 32 E TEST METHODGROWTH OF AQUATIC MICRO-ORGANISMS. 35 F TEST METHODCYTOTOXIC ACTIVITY OF WATER EXTRACT. 42
21、 G TEST METHODMUTAGENIC ACTIVITY OF WATER EXTRACT 51 H TEST METHODEXTRACTION OF METALS. 55 I TEST METHODEXTRACTION PROCEDURES FOR END-OF-LINE FITTINGS. 59 J HIGH TEMPERATURE TESTS. 64 K TEST METHODSAMPLE EXTRACTION PROCEDURE FOR USE WITH WATER-HEATING SYSTEMS 66 L PRODUCT SUBMISSION INFORMATION 71 M
22、 SIMULATED SAMPLES 74 N TEST REPORT . 76 Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 22 Aug 2008 AS/NZS 4020:2005 4 FOREWORD Guidelines for drinking water quality in Australia have been prepared conjointly by the National Health and Medical Research Council (NHMRC) and the Australian Water Resource
23、s Council (AWRC), which combined in 1993 with the Agricultural Council and the Soil Conservation Council to form the Agriculture and Resource Management Council of Australia and New Zealand (ARMCANZ). In New Zealand, drinking water quality is subject to the Drinking Water Standards for New Zealand p
24、repared by the Ministry of Health. The Australian Drinking Water Guidelines (ADWG) and Drinking Water Standards for New Zealand (DWSNZ) cover a range of physical, chemical, microbiological and radiological characteristics relevant to the health and aesthetic concerns of consumers, and recommend valu
25、es for those characteristics. One of the important factors influencing the quality of water supplied to consumers is the effect of the various materials that come into contact with the water as it passes through the system. The potential effect becomes more critical as the size of the system decreas
26、es from water supply to reticulation to plumbing systems, and the residence time in contact with these systems increases. This Standard provides a means to test such materials in order that the achievement of the appropriate national recommended water quality values is not jeopardized. The Standard
27、prescribes methods of testing and compliance limits for the effects of a product on the taste and appearance of water, the ability of a product to support the growth of aquatic micro-organisms and the quantity of toxic metals and non-metallic substances leached from the product when exposed to the t
28、est water. In addition, the Standard prescribes extraction procedures for products in contact with hot water and in end- of-line situations. The hot water tests apply where water has the potential for human consumption, food preparation, utensil washing and oral hygiene. Not all of the physical and
29、chemical characteristics listed in the NHMRC/ARMCANZ guidelines and the DWSNZ are specifically referred to in this Standard. For those characteristics not listed, it is envisaged that the methods of testing given in this Standard and the recommended values given by NHMRC/ARMCANZ or the DWSNZ will be
30、 sufficient and readily adapted by the responsible authority. The dominant principle of this Standard is to allow water quality requirements, as adopted by the particular authority responsible for water supply quality, to be met at consumers taps. Besides the effects of materials, this quality will
31、depend on other factors, including commissioning and operational procedures such as flushing of mains, which are the responsibility of the local water agency. This Standard is published for use by manufacturers, water agencies and regulators in Australia and New Zealand to allow the selection of mat
32、erials exposed to drinking water, and as a basis for identifying the performance that can be expected by purchasers of products used in water supply systems. It is intended that appropriate Australian and New Zealand Standards and other specifications will refer to this Standard if they specify requ
33、irements for the effects of a particular product on the quality of drinking water. The Standard applies only to water quality at customer taps with respect to general health requirements for the consumer. It is not intended as either a long-term indication of the corrosion resistance of the material
34、 itself or any short-term effects due to highly localized and unpredictable conditions of water chemistry. It is the understanding of the Committee that prepared this Standard that, in line with the intention of the ADWG and the DWSNZ, the only products that are required to satisfy the provisions of
35、 this Standard are products in contact with drinking water. Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 22 Aug 2008 5 AS/NZS 4020:2005 COPYRIGHT STANDARDS AUSTRALIA/STANDARDS NEW ZEALAND Australian/New Zealand Standard Testing of products for use in contact with drinking water 1 SCOPE This Standard
36、 specifies requirements for the suitability of products for use in contact with drinking water, with regard to their effect on the quality of water. These products include all items such as pipes, fittings, components, and materials used in coating, protection, lining, jointing, sealing and lubricat
37、ion applications in the water supply and plumbing industry. The Standard requires that products intended for use in contact with drinking water be tested by exposure to extractant waters. Where appropriate, a scaling factor is applied to such tests to compensate for differences between laboratory an
38、d field conditions. NOTE: This Standard may be used to test the suitability of products intended for use in contact with types of water other than drinking water. This Standard does not take into account possible changes in materials, methods of manufacture or installation, nor is any consideration
39、given to the frequency of testing of products. These should be covered by relevant product Standards. As a guide, re- verification testing of products to this Standard is generally desirable after a period of five years. This is consistent with the requirements of overseas bodies such as the Drinkin
40、g Water Inspectorate in the United Kingdom. Chemicals and media used directly for treating raw water to provide a suitable drinking water supply (e.g. lime, coagulants, activated carbon, ion-exchange resins) are not covered by this Standard. 2 REFERENCED DOCUMENTS The following documents are referre
41、d to in this Standard: AS 1012 Methods of testing concrete 1012.8.1 Part 8.1: Method of making and curing concreteCompression and indirect tensile test specimens 1012.8.2 Part 8.2: Method of making and curing concreteFlexure test specimens 2567 Laminar flow cytotoxic drug safety cabinets 4276 Water
42、microbiology 4276.2 Part 2: Culture media, diluents and reagents 5601 Gas installations (AG 601) AS/NZS 1477 PVC pipes and fittings for pressure applications 2031 Selection of containers and preservation of water samples for microbiological analysis 2243 Safety in laboratories 2243.3 Part 3: Microbi
43、ological aspects and containment facilities 3350 Safety of household and similar electrical appliances 3350.2.21 Part 2.21: Particular requirementsStorage water heaters 3500 Plumbing and drainage 3500.4 Part 4: Heated water services Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 22 Aug 2008 AS/NZS 402
44、0:2005 6 COPYRIGHT ISO 2230 Rubber productsGuidelines for storage 3696 Water for analytical laboratory useSpecification and test methods 5725 Accuracy (trueness and precision) of measurement methods and results 5725-2 Part 2: Basic method for the determination of repeatability and reproducibility of
45、 a standard measurement method 5814 Water qualityDetermination of dissolved oxygenElectrochemical probe method 7027 Water qualityDetermination of turbidity 7393 Water qualityDetermination of free chlorine and total chlorine 7393-2 Part 2: Colorimetric method using N,N-diethyl-1, 4-phenylenediamine,
46、for routine control purposes 7887YYYY Water qualityExamination and determination of colour BS 748 Specification for haemacytometer and particle counting chambers 5586 Sensory analysis apparatus 5586-1 Part 1: Specification for wine-tasting glass 6068 Water quality 6068-2 Part 2: Physical, chemical a
47、nd biochemical methods NHMRC/ARMCANZ Australian Drinking Water Guidelines. NHMRC/ARMCANZ. AGPS, Canberra, 1996 Manual of analytical quality control for the water industry. Water Research Centre. Technical report NS30, 1989 New Zealand Ministry of Health Drinking Water Standards for New Zealand (DWSN
48、Z). 2005. New Zealand Ministry of Health, Wellington, 2005 APHA, AWWA and WPCF Standard methods for the examination of water and waste water. 20th edition, American Public Health Association, American Water Works Association, Water Environment Federation. HMSO Methods for the examination of waters a
49、nd associated materials. The microbiology of water, Part 1Drinking water. Report on public health and medical subjects No. 71. HMSO, London, 1994 OECD Guideline for testing of chemicals, 471: Genetic toxicology: Salmonella typhimurium, reverse mutation assay. OECD, Paris 1983 Guideline for testing of chemicals, 472: Genetic toxicology: Escherichia coli, reverse mutation assay. OECD, Paris, 1983 3 DEFINITIONS For the purposes of this Standard, the definitions below apply. 3.1 Anaerobic adhesive An adhesive that cures spontaneously in